Overall Review: Reading a lot of reviews on Terramaster as a brand I made up my mind specially once I learned through a forum that the D6 320 utilizes Asmedia controllers which is superior in quality compared to inferior controllers in other brands, the build quality of the unit and its compactness is a nice surprise and the two fans on the back on full throttle are not noisy at all and are surpassed by the sound of the Hard Drives spinning. I fully tested the unit utilizing all 6 bays with WD RED Pros and WD Ultrastars and SSDs , the device can power up 6 different 7200RPM Hard Drives at once without a problem to accomplish a similar feat with separate single drive enclosures would be a big spaghetti mix of cables and power adapters. I copied 20 + terabytes of data in between different drives for hours without a hiccup I didnt max the 10Gb/s speed as the port on my computer was the limitation nevertheless I saturated the 5 Gb/s of my computer, this is a solid unit that is not rivaled in the market in terms of form factor and quality, it manage huge file transfers and data overhauling copying / mirroring in between multiple Hard Drives simultaneously for extended duration I opted for the horizontal setup as shown in pictures as I believe this is optimal for the drives and for that I had to add custom rubber legs at the bottom. a must to eliminate vibration noise from chassis All drives show independently on windows and you can read individual smart data for each drive, the drives are hot swappable you can power them off individually and swap them for different drives while other are copying as an example, drives are fixed in trays without screws (tool less) which is a key edge for this unit not clearly emphasized on while screws are an option for 3.5 always its a must to mount 2.5 drives Conclusion Its the best direct storage device you can buy because of its compactness, quality chip controllers, hot swap capacity, tool less implementation, and impressive 10Gb/s speed